A pressure roller quenching process and equipment for preventing quenching cracking

Abstract

The present invention discloses a roller quenching process and equipment for preventing quenching cracking, and relates to the field of metal processing technology, including a base and a heating component, wherein support seats are arranged on both sides of the top of the base, and a slide groove is arranged at the outer end of the support seat, and a displacement component is arranged at the outer end of the slide groove. The present invention can drive the roller to rotate at high speed through the operation of the second motor, and at the same time, the first motor rotates forward and reversely in a small range, so that the roller can swing in a small range in a cycle in the quenching box, and the contact area between the cooling oil and the roller can be reduced by rotating the roller at high speed and swinging in a small range, and the speed of the first motor and the second motor in this process will gradually decrease, so that the contact area between the cooling oil and the roller can be gradually increased. Through the above design, the contact area between the roller assembly and the cooling oil can be increased during the quenching process, so that the slow cooling effect of the roller can be achieved, which can avoid the situation that the roller cracks due to excessive temperature difference during quenching.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a roller quenching process and equipment for preventing quenching cracks. Background Art

[0002] The pressure roller is a roller body used for rolling objects. Since the pressure roller is used for rolling objects, in order to ensure its own hardness, the pressure roller usually needs to be quenched during the production process. The purpose of quenching is to transform the supercooled austenite of the pressure roller into martensite or bainite to obtain martensite or bainite structure, and then temper it at different temperatures to greatly improve the rigidity, hardness, wear resistance, fatigue strength and toughness of the pressure roller, so as to meet the use requirements of the pressure roller for rolling objects.

[0003] During the quenching process, the roller body is prone to cracking due to reasons such as the normalizing temperature rising too fast and the quenching cooling speed being too fast. In addition, during the quenching process, the roller usually needs to go through the steps of preheating, normalizing, quenching and tempering, but the above steps are usually carried out at different workstations. Frequent movement of the roller at different workstations usually takes a lot of time, which seriously affects the overall production speed of the roller.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a roller quenching process and equipment for preventing quenching cracking are proposed. Summary of the invention

[0005] The object of the present invention is to provide a pressure roller quenching process and equipment for preventing quenching cracks, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a roller quenching process for preventing quenching cracking, comprising the following steps:

[0007] S1: The staff places the pressure roller that needs to be quenched on the inner side of the fixed plate, and drives the lead screw to rotate inside the threaded hole seat by rotating the handle, so that the lead screw drives the clamping block to approach the pressure roller and clamp it, which ensures that the pressure roller is stably placed inside the fixed assembly;

[0008] S2: The first motor works to make the rotating plate drive the fixed plate to flip, so that the fixed plate drives the pressure roller to rotate to a horizontal position. In the process of rotating to a horizontal position, the pressure roller passes through the gap between the two arc-shaped baffles and enters the space inside the two arc-shaped baffles. The third motor works to make the rotating plate drive the heating seat to rotate. After the heating seat rotates, the gap between the two arc-shaped baffles is blocked. At this time, the two heating seats cooperate to combine the two arc-shaped baffles into a complete circle and surround the pressure roller. After the heating assembly surrounds the pressure roller, the heating seat works to preheat the pressure roller.

[0009] S3: The third motor drives the heating seat to rotate, so that the gap between the two arc-shaped baffles is exposed again, and the first motor drives the rotating plate to rotate 180 degrees in the opposite direction, so that the pressing roller is quickly moved from the preheating heating component to the normalizing heating component for normalizing;

[0010] S4: The first motor drives the rotating plate to rotate, so that the pressure roller rotates to a longitudinal downward position, and through the displacement of the sliding seat on the inner side of the slide groove, the fixed plate drives the pressure roller to enter the quenching box and contact with the cooling oil to achieve quenching. After the pressure roller extends into the quenching box, the second motor works to drive the pressure roller to rotate at high speed, and at the same time, the first motor rotates slightly forward and reverse, so that the pressure roller swings in a small range in the quenching box. By rotating the pressure roller at high speed and swinging in a small range, the contact area between the cooling oil and the pressure roller is reduced, and the rotation speed of the first motor and the second motor will gradually decrease in this process, which makes the contact area between the cooling oil and the pressure roller gradually increase. By increasing the contact area between the pressure roller components and the cooling oil during the quenching process, a slow cooling effect on the pressure roller is achieved, which avoids the pressure roller cracking due to excessive temperature difference during quenching.

[0011] A roller quenching device for preventing quenching cracking comprises a base and a heating assembly, support seats are arranged on both sides of the top of the base, and a slide groove is opened at the outer end of the support seat, a displacement assembly is arranged at the outer end of the slide groove, and the outer end of the displacement assembly is connected to a fixing assembly, a roller is arranged on the inner side of the fixing assembly, a top plate is arranged at the top of the support seat, and the front and rear ends of the top plate are connected to fixing plates, the outer end of the fixing plate is connected to a heating assembly, and a quenching box is arranged at the bottom outer end of the base.

[0012] Furthermore, the displacement assembly includes a sliding seat, an electric push rod, a connecting seat, a docking seat, a first motor, a rotating plate, a second motor and a rotating seat, the outer end of the sliding seat is connected to the electric push rod, and the output end of the electric push rod is connected to the connecting seat, the outer end of the connecting seat is provided with a docking seat, and the outer end of the docking seat is provided with a first motor, the output end of the first motor is connected to the rotating plate, the top end of the rotating plate is connected to the second motor, and the bottom end of the rotating plate is connected to the rotating seat.

[0013] Furthermore, the sliding seat slides on the outer end of the supporting seat through a sliding groove, and the sliding seat is fixedly connected to the electric push rod.

[0014] Furthermore, the first motor drives the rotating plate to rotate, and the second motor drives the rotating seat to rotate.

[0015] Furthermore, the fixing assembly includes a fixing disk, a threaded hole seat, a screw, a rotating handle and a locking block. A threaded hole seat is provided on the inner side of the fixing disk, and a screw is connected to the inner side of the threaded hole seat. The top end of the screw is connected to the rotating handle, and a locking block is provided at the end of the screw.

[0016] Furthermore, the threaded hole seats are distributed in a ring shape inside the fixed disk, and the fixed disk is fixedly connected to the rotating seat.

[0017] Furthermore, the engaging block is arc-shaped, and the engaging block is engaged and fixed with the pressure roller.

[0018] Furthermore, the heating assembly includes a connecting plate, an arc-shaped baffle, a third motor, a rotating plate and a heating seat, arc-shaped baffles are arranged on both sides of the outside of the connecting plate, and the outer end of the fixed plate is connected to the third motor, the output end of the third motor is connected to the rotating plate, and the outer end of the rotating plate is provided with a heating seat.

[0019] Furthermore, the rotating disk is fixedly connected to the heating seat, and the third motor drives the rotating disk to rotate.

[0020] The present invention provides a roller quenching process and equipment for preventing quenching cracking, which has the following beneficial effects:

[0021] 1. In the process of rotating to a horizontal position, the pressure roller of the present invention can pass through the gap between the two arc-shaped baffles and enter the space inside the two arc-shaped baffles. After the pressure roller is rotated to a horizontal position, the third motor can be operated to enable the rotating disk to drive the heating seat to rotate. After the heating seat rotates, the gap between the two arc-shaped baffles can be blocked. At this time, the two heating seats cooperate to combine the two arc-shaped baffles into a complete circle and surround the pressure roller. After the heating assembly surrounds the pressure roller, the heating seat can be operated to preheat the pressure roller. During the preheating process, the second motor drives the rotating seat to rotate, which can enable the fixed disk to drive the pressure roller to rotate. By rotating the pressure roller, it can be ensured that it is preheated evenly. There are two groups of heating components on the top plate, one of which is responsible for preheating and the other is responsible for normalizing. After the preheating is completed, the third motor drives the heating seat to rotate, so that the gap between the two arc-shaped baffles can be exposed again, and the first motor drives the rotating disk to rotate 180 degrees in the opposite direction, so that the pressure roller can be quickly moved from the preheating heating component to the normalizing heating component. By adopting the operation of preheating first and then normalizing, it can be ensured that the temperature rises evenly when the pressure roller is heated, thereby reducing the risk of cracking during quenching. In the above operation process, thanks to the convenient opening and closing of the heating component and the flexible adjustment of the displacement component, the preheated pressure roller can be quickly normalized, which can avoid the situation where the time interval between preheating and normalizing is too long and affects the preheating effect.

[0022] 2. The first motor of the present invention drives the rotating plate to rotate, which can make the pressure roller rotate to a vertical downward placement posture, and the displacement of the sliding seat on the inner side of the slide groove can make the fixed plate drive the pressure roller to enter the quenching box to contact with the cooling oil to achieve quenching. After the pressure roller extends into the quenching box, the second motor works to drive the pressure roller to rotate at a high speed. At the same time, the first motor rotates forward and reversely in a small range, which can make the pressure roller swing in a small range in the quenching box. By making the pressure roller rotate at a high speed and swing in a small range, the contact area between the cooling oil and the pressure roller can be reduced, and the second motor can rotate forward and reversely in a small range. The rotation speed of the first motor and the second motor will gradually decrease during this process, which allows the contact area between the cooling oil and the pressure roller to gradually increase. Through the above design, the contact area between the pressure roller and the cooling oil is increased during the quenching process, so that the slow cooling effect of the pressure roller can be achieved, which can avoid the pressure roller cracking due to excessive temperature difference during quenching, which can improve the quenching stability of the pressure roller. In addition, during the reciprocating rotation of the pressure roller, the cooling oil inside the quenching box can be rapidly convected, which can effectively ensure that the cooling oil in the quenching box maintains a uniform temperature.

[0023] 3. In the quenching process of the pressure roller, the displacement component of the present invention can realize the rapid displacement of the pressure roller at different workstations and the slow cooling of the pressure roller during the quenching process. By integrating multiple functions into the displacement component at one time, the overall volume of the equipment can be reduced, and the quenching process of the equipment can be visualized, which is convenient for maintenance in case of failure. At the same time, the pressure roller can be fixed once to realize multiple steps such as preheating, normalizing, quenching and annealing (after quenching, it returns to the heating component workstation for annealing), which can greatly improve the working efficiency of the equipment. In addition, thanks to the rapid displacement of the pressure roller at different workstations assisted by the displacement component, the heat dissipation during preheating and normalizing can be reduced, which improves the quenching effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a roller quenching device for preventing quenching cracking according to the present invention;

[0025] Figure 2 It is a schematic diagram of the side structure of a roller quenching device for preventing quenching cracking according to the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a fixing assembly of a roller quenching device for preventing quenching cracking according to the present invention;

[0027] Figure 4 It is a schematic structural diagram of a heating component of a roller quenching device for preventing quenching cracking according to the present invention in an open state;

[0028] Figure 5 It is a schematic structural diagram of a closed state of a heating component of a roller quenching device for preventing quenching cracking according to the present invention;

[0029] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of a heating component of a roller quenching device for preventing quenching cracking.

[0030] In the figure: 1. base; 2. support seat; 3. slide groove; 4. displacement assembly; 401. sliding seat; 402. electric push rod; 403. connecting seat; 404. docking seat; 405. first motor; 406. rotating plate; 407. second motor; 408. rotating seat; 5. fixing assembly; 501. fixing disk; 502. threaded hole seat; 503. lead screw; 504. rotating handle; 505. locking block; 6. pressure roller; 7. top plate; 8. fixing plate; 9. heating assembly; 901. connecting disk; 902. arc baffle; 903. third motor; 904. rotating disk; 905. heating seat; 10. quenching box. DETAILED DESCRIPTION

[0031] See also Figures 1 to 6 The present invention provides a technical solution: a roller quenching process and equipment for preventing quenching cracking, comprising a base 1 and a heating assembly 9, support seats 2 are arranged on both sides of the top of the base 1, and a slide groove 3 is opened at the outer end of the support seat 2, a displacement assembly 4 is arranged at the outer end of the slide groove 3, and a fixing assembly 5 is connected to the outer end of the displacement assembly 4, a roller 6 is arranged on the inner side of the fixing assembly 5, a top plate 7 is arranged at the top of the support seat 2, and a fixing plate 8 is connected to the front and rear ends of the top plate 7, and a heating assembly 9 is connected to the outer end of the fixing plate 8, and a quenching box 10 is arranged at the bottom outer end of the base 1;

[0032] See also Figures 1 to 6The displacement assembly 4 includes a sliding seat 401, an electric push rod 402, a connecting seat 403, a docking seat 404, a first motor 405, a rotating plate 406, a second motor 407 and a rotating seat 408. The outer end of the sliding seat 401 is connected to the electric push rod 402, and the output end of the electric push rod 402 is connected to the connecting seat 403. The outer end of the connecting seat 403 is provided with a docking seat 404, and the outer end of the docking seat 404 is provided with a first motor 405. The output end of the first motor 405 is connected to The rotating plate 406 is connected to the top of the rotating plate 406, and the rotating seat 408 is connected to the bottom of the rotating plate 406. The sliding seat 401 slides on the outer end of the support seat 2 through the slide groove 3, and the sliding seat 401 is fixedly connected to the electric push rod 402. The first motor 405 drives the rotating plate 406 to rotate, and the second motor 407 drives the rotating seat 408 to rotate. The fixing assembly 5 includes a fixing plate 501, a threaded hole seat 502, a lead screw 503, and a rotating handle 50 4 and a snap-fit ​​block 505, a threaded hole seat 502 is arranged on the inner side of the fixed disk 501, and a lead screw 503 is connected to the inner side of the threaded hole seat 502, a rotating handle 504 is connected to the top of the lead screw 503, and a snap-fit ​​block 505 is arranged on the end of the lead screw 503, the threaded hole seat 502 is distributed in an annular shape inside the fixed disk 501, and the fixed disk 501 is fixedly connected to the rotating seat 408, the snap-fit ​​block 505 is arc-shaped, and the snap-fit ​​block 505 is snap-fitted and fixed with the pressure roller 6, and the heating component 9 includes a connection plate 901, an arc-shaped baffle plate 902, a third motor 903, a rotating plate 904 and a heating seat 905, arc-shaped baffle plates 902 are arranged on both sides of the outside of the connection plate 901, and the outer end of the fixed plate 8 is connected to the third motor 903, the output end of the third motor 903 is connected to the rotating plate 904, and the outer end of the rotating plate 904 is provided with a heating seat 905, the rotating plate 904 is fixedly connected to the heating seat 905, and the third motor 903 drives the rotating plate 904 to rotate;

[0033] The specific operation is as follows: the staff places the pressure roller 6 that needs to be quenched on the inner side of the fixed plate 501, and by rotating the rotating handle 504, the lead screw 503 can be driven to rotate inside the threaded hole seat 502, so that the lead screw 503 can drive the locking block 505 to approach the pressure roller 6 and lock it, which can ensure that the pressure roller 6 is stably placed inside the fixed component 5. After the pressure roller 6 is fixed, the first motor 405 is operated to enable the rotating plate 406 to drive the fixed plate 501 to flip, so that the fixed plate 501 can drive the pressure roller 6 to rotate to a horizontal position. In the process of rotating to a horizontal position, the pressure roller 6 can pass through the gap between the two arc-shaped baffles 902 and enter the internal space of the two arc-shaped baffles 902, and the pressure roller 6 rotates to After being placed horizontally, the third motor 903 works, so that the rotating disk 904 can drive the heating seat 905 to rotate. After the heating seat 905 rotates, the gap between the two arc-shaped baffles 902 can be blocked. At this time, the two heating seats 905 cooperate with the two arc-shaped baffles 902 to form a complete circle and surround the pressure roller 6. After the heating component 9 surrounds the pressure roller 6, the heating seat 905 works to preheat the pressure roller 6. During the preheating process of the pressure roller 6, the rotating seat 408 is driven to rotate by the second motor 407, so that the fixed disk 501 can drive the pressure roller 6 to rotate. By rotating the pressure roller 6, it can be ensured that it is preheated evenly. The heating component 9 is provided with two groups on the top plate 7, one of which is responsible for preheating, and the other is responsible for heating. Fire, when preheating is completed, the third motor 903 drives the heating seat 905 to rotate, so that the gap between the two arc-shaped baffles 902 can be exposed again, and the first motor 405 drives the rotating plate 406 to rotate 180 degrees in the opposite direction, so that the pressure roller 6 can be quickly moved from the preheating heating component 9 to the normalizing heating component 9. By adopting the operation of preheating first and then normalizing, it can be ensured that the temperature of the pressure roller 6 rises evenly when heated, thereby reducing the risk of cracking during quenching. In the above operation process, thanks to the convenient opening and closing of the heating component 9 and the flexible adjustment of the displacement component 4, the preheated pressure roller 6 can be quickly normalized, which can avoid the situation where the time interval between preheating and normalizing is too long and affects the preheating effect. After the pressure roller 6 completes normalizing, the first motor 405 drives the rotating plate 406 rotates, which can make the pressure roller 6 rotate to a vertical downward placement posture, and the displacement of the sliding seat 401 on the inner side of the slide groove 3 can make the fixed plate 501 drive the pressure roller 6 to enter the quenching box 10 to contact the cooling oil for quenching. After the pressure roller 6 extends into the quenching box 10, the second motor 407 works to drive the pressure roller 6 to rotate at a high speed. At the same time, the first motor 405 rotates slightly forward and reverse, which can make the pressure roller 6 swing in a small range in the quenching box 10. By making the pressure roller 6 rotate at a high speed and swing in a small range, the contact area between the cooling oil and the pressure roller 6 can be reduced, and the rotation speed of the first motor 405 and the second motor 407 in this process will gradually decrease, which makes the contact area between the cooling oil and the pressure roller 6 gradually increase. Through the above design,By increasing the contact area between the pressure roller 6 and the cooling oil during the quenching process, a slow cooling effect can be achieved on the pressure roller 6, which can avoid the pressure roller 6 from cracking due to excessive temperature difference during quenching, which can improve the quenching stability of the pressure roller 6. In addition, during the reciprocating rotation of the pressure roller 6, the cooling oil inside the quenching box 10 can be rapidly convected, which can effectively ensure that the cooling oil in the quenching box 10 maintains a uniform temperature. In the quenching process of the pressure roller 6, the displacement component 4 can not only realize the rapid displacement of the pressure roller 6 at different workstations, but also realize the slow cooling of the pressure roller 6 during the quenching process. By integrating multiple functions into the displacement component 4 at one time, the overall volume of the equipment can be reduced, and the quenching process of the equipment can be made intuitive, which is convenient for maintenance in case of failure. At the same time, this also enables the pressure roller 6 to complete multiple steps such as preheating, normalizing, quenching and annealing (after quenching, return to the heating component 9 station for annealing) after one fixation, which can greatly improve the working efficiency of the equipment. In addition, thanks to the rapid displacement of the pressure roller 6 at different stations assisted by the displacement component 4, the heat dissipation during preheating and normalizing can be reduced, which improves the quenching effect of the equipment.

[0034] In summary, in the process of quenching the pressure roller and the equipment thereof for preventing quenching cracking, when in use, the staff first places the pressure roller 6 to be quenched inside the fixed plate 501, and by rotating the handle 504, the lead screw 503 can be driven to rotate inside the threaded hole seat 502, so that the lead screw 503 can drive the clamping block 505 to approach the pressure roller 6 and clamp it, which can ensure that the pressure roller 6 is stably placed inside the fixed component 5;

[0035] After the pressing roller 6 is fixed, the first motor 405 works to enable the rotating plate 406 to drive the fixed plate 501 to flip, so that the fixed plate 501 can drive the pressing roller 6 to rotate to a horizontal position. In the process of rotating to a horizontal position, the pressing roller 6 can pass through the gap between the two arc-shaped baffles 902 and enter the space inside the two arc-shaped baffles 902. After the pressing roller 6 rotates to a horizontal position, the third motor 903 works to enable the rotating plate 904 to drive the heating seat 905 to rotate. After the rotation of the two arc-shaped baffles 902, the gap between the two arc-shaped baffles 902 can be blocked. At this time, the two heating seats 905 cooperate with the two arc-shaped baffles 902 to form a complete circle and surround the pressure roller 6. After the heating assembly 9 surrounds the pressure roller 6, the heating seat 905 works to preheat the pressure roller 6. During the preheating process of the pressure roller 6, the second motor 407 drives the rotating seat 408 to rotate, which can make the fixed plate 501 drive the pressure roller 6 to rotate. By rotating the pressure roller 6, it can be ensured that it is evenly preheated.

[0036] After the preheating is completed, the third motor 903 drives the heating seat 905 to rotate, so that the gap between the two arc-shaped baffles 902 can be exposed again, and the first motor 405 drives the rotating plate 406 to rotate 180 degrees in the opposite direction, so that the pressure roller 6 can be quickly moved from the preheating heating component 9 to the normalizing heating component 9. By adopting the operation of preheating first and then normalizing, it can be ensured that the temperature of the pressure roller 6 rises evenly when heated, thereby reducing the risk of cracking during quenching. In the above operation process, thanks to the convenient opening and closing of the heating component 9 and the flexible adjustment of the displacement component 4, the preheated pressure roller 6 can be quickly normalized, which can avoid the situation where the time interval between preheating and normalizing is too long and affects the preheating effect.

[0037] After the pressure roller 6 is normalized, the first motor 405 drives the rotating plate 406 to rotate, so that the pressure roller 6 can be rotated to a longitudinal downward position, and the displacement of the sliding seat 401 on the inner side of the slide groove 3 can enable the fixed plate 501 to drive the pressure roller 6 to enter the quenching box 10 to contact the cooling oil for quenching. After the pressure roller 6 is extended into the quenching box 10, the second motor 407 works to drive the pressure roller 6 to rotate at a high speed. At the same time, the first motor 405 rotates forward and reversely in a small range, so that the pressure roller 6 can swing in a small range in the quenching box 10. By rotating the pressure roller 6 at a high speed and swinging in a small range, the cooling oil and The contact area of ​​the pressure roller 6, and the rotation speed of the first motor 405 and the second motor 407 in this process will gradually decrease, which makes the contact area between the cooling oil and the pressure roller 6 gradually increase. Through the above design, by increasing the contact area of ​​the pressure roller 6 components with the cooling oil during the quenching process, the slow cooling effect of the pressure roller 6 can be achieved, which can avoid the pressure roller 6 from cracking due to excessive temperature difference during quenching, which can improve the quenching stability of the pressure roller 6. In addition, during the reciprocating rotation of the pressure roller 6, the cooling oil inside the quenching box 10 can be rapidly convected, which can effectively ensure that the cooling oil in the quenching box 10 maintains a uniform temperature.

[0038] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A roller quenching process for preventing quenching cracking, characterized in that: The following steps are involved: S1: The staff places the pressure roller (6) to be quenched on the inner side of the fixed plate (501), and drives the lead screw (503) to rotate inside the threaded hole seat (502) by rotating the handle (504), so that the lead screw (503) drives the engaging block (505) to move closer to the pressure roller (6) and engage with it, thereby ensuring that the pressure roller (6) is stably placed inside the fixed component (5); S2: The first motor (405) operates to cause the rotating plate (406) to drive the fixed plate (501) to flip, so that the fixed plate (501) drives the pressure roller (6) to rotate to a horizontal position. In the process of rotating to a horizontal position, the pressure roller (6) passes through the gap between the two arc-shaped baffles (902) and enters the space inside the two arc-shaped baffles (902). The third motor (903) operates to cause the rotating plate (904) to drive the heating seat (905) to rotate. After the heating seat (905) rotates, the gap between the two arc-shaped baffles (902) is blocked. At this time, the two heating seats (905) cooperate with the two arc-shaped baffles (902) to form a complete circle and surround the pressure roller (6). After the heating component (9) surrounds the pressure roller (6), the heating seat (905) operates to preheat the pressure roller (6); S3: The heating seat (905) is driven to rotate by the third motor (903), so that the gap between the two arc-shaped baffles (902) is exposed again, and the first motor (405) drives the rotating plate (406) to rotate 180 degrees in the opposite direction, so that the pressure roller (6) is quickly moved from the preheating heating component (9) to the normalizing heating component (9) for normalizing; S4: The first motor (405) drives the rotating plate (406) to rotate, so that the pressure roller (6) rotates to a vertically downward placement posture, and the sliding seat (401) is displaced on the inner side of the slide groove (3), so that the fixed plate (501) drives the pressure roller (6) to enter the quenching box (10) to contact with the cooling oil to achieve quenching. After the pressure roller (6) extends into the quenching box (10), the second motor (407) works to drive the pressure roller (6) to rotate at a high speed, and at the same time, the first motor (405) rotates slightly forward and reverse, so that the pressure roller (6) is in the quenching box. The box (10) performs a small-range circular swing, and the contact area between the cooling oil and the pressure roller (6) is reduced by causing the pressure roller (6) to rotate at a high speed and swing in a small range. The rotation speeds of the first motor (405) and the second motor (407) are gradually reduced during this process, which gradually increases the contact area between the cooling oil and the pressure roller (6). By increasing the contact area between the pressure roller (6) and the cooling oil during the quenching process, a slow cooling effect on the pressure roller (6) is achieved, thereby avoiding the pressure roller (6) from cracking due to excessive temperature difference during quenching.

2. A roller quenching device for preventing quenching cracks, applied to the roller quenching process for preventing quenching cracks as claimed in claim 1, comprising a base (1) and a heating component (9), characterized in that: Support seats (2) are arranged on both sides of the top of the base (1), and a slide groove (3) is opened at the outer end of the support seat (2), a displacement component (4) is arranged at the outer end of the slide groove (3), and the outer end of the displacement component (4) is connected to a fixing component (5), and a pressure roller (6) is arranged on the inner side of the fixing component (5), a top plate (7) is arranged at the top of the support seat (2), and the front and rear ends of the top plate (7) are connected to a fixing plate (8), and the outer end of the fixing plate (8) is connected to a heating component (9), and a quenching box (10) is arranged at the outer end of the bottom of the base (1).

3. A roller quenching device for preventing quenching cracking according to claim 2, characterized in that: The displacement assembly (4) comprises a sliding seat (401), an electric push rod (402), a connecting seat (403), a docking seat (404), a first motor (405), a rotating plate (406), a second motor (407) and a rotating seat (408); the outer end of the sliding seat (401) is connected to the electric push rod (402), and the output end of the electric push rod (402) is connected to the connecting seat (403); the outer end of the connecting seat (403) is provided with a docking seat (404), and the outer end of the docking seat (404) is provided with the first motor (405); the output end of the first motor (405) is connected to the rotating plate (406), the top end of the rotating plate (406) is connected to the second motor (407), and the bottom end of the rotating plate (406) is connected to the rotating seat (408).

4. A roller quenching equipment for preventing quenching cracking according to claim 3, characterized in that: The sliding seat (401) slides on the outer end of the support seat (2) through the sliding groove (3), and the sliding seat (401) is fixedly connected to the electric push rod (402).

5. The press roller quenching equipment for preventing quenching cracking according to claim 3, characterized in that: The first motor (405) drives the rotating plate (406) to rotate, and the second motor (407) drives the rotating seat (408) to rotate.

6. The press roll quenching equipment for preventing quenching cracking according to claim 3, characterized in that: The fixing assembly (5) comprises a fixing disk (501), a threaded hole seat (502), a lead screw (503), a rotating handle (504) and a snap-fit ​​block (505); the threaded hole seat (502) is arranged on the inner side of the fixing disk (501), and the lead screw (503) is connected to the inner side of the threaded hole seat (502); the top end of the lead screw (503) is connected to the rotating handle (504), and the snap-fit ​​block (505) is arranged on the end of the lead screw (503).

7. A roller quenching device for preventing quenching cracking according to claim 6, characterized in that: The threaded hole seats (502) are distributed in a ring shape inside the fixed disk (501), and the fixed disk (501) is fixedly connected to the rotating seat (408).

8. The press roll quenching equipment for preventing quenching cracking according to claim 6, characterized in that: The engaging block (505) is arc-shaped, and the engaging block (505) is engaged and fixed with the pressure roller (6).

9. The press roller quenching equipment for preventing quenching cracking according to claim 2, characterized in that: The heating component (9) comprises a connection plate (901), an arc-shaped baffle plate (902), a third motor (903), a rotating plate (904) and a heating seat (905); arc-shaped baffle plates (902) are arranged on both sides of the outside of the connection plate (901); the outer end of the fixed plate (8) is connected to the third motor (903); the output end of the third motor (903) is connected to the rotating plate (904); and the outer end of the rotating plate (904) is provided with a heating seat (905).

10. A press roller quenching device for preventing quenching cracking according to claim 9, characterized in that: The rotating disk (904) is fixedly connected to the heating seat (905), and the third motor (903) drives the rotating disk (904) to rotate.

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